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usbnet: convert to internal net_device stats
[deliverable/linux.git] / drivers / net / usb / rtl8150.c
CommitLineData
1da177e4
LT		 1/*
2 * Copyright (c) 2002 Petko Manolov (petkan@users.sourceforge.net)
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * version 2 as published by the Free Software Foundation.
7 */
8
1da177e4
LT		 9#include <linux/init.h>
10#include <linux/signal.h>
11#include <linux/slab.h>
12#include <linux/module.h>
13#include <linux/netdevice.h>
14#include <linux/etherdevice.h>
15#include <linux/mii.h>
16#include <linux/ethtool.h>
17#include <linux/usb.h>
18#include <asm/uaccess.h>
19
20/* Version Information */
21#define DRIVER_VERSION "v0.6.2 (2004/08/27)"
22#define DRIVER_AUTHOR "Petko Manolov <petkan@users.sourceforge.net>"
23#define DRIVER_DESC "rtl8150 based usb-ethernet driver"
24
25#define IDR 0x0120
26#define MAR 0x0126
27#define CR 0x012e
28#define TCR 0x012f
29#define RCR 0x0130
30#define TSR 0x0132
31#define RSR 0x0133
32#define CON0 0x0135
33#define CON1 0x0136
34#define MSR 0x0137
35#define PHYADD 0x0138
36#define PHYDAT 0x0139
37#define PHYCNT 0x013b
38#define GPPC 0x013d
39#define BMCR 0x0140
40#define BMSR 0x0142
41#define ANAR 0x0144
42#define ANLP 0x0146
43#define AER 0x0148
44#define CSCR 0x014C /* This one has the link status */
45#define CSCR_LINK_STATUS (1 << 3)
46
47#define IDR_EEPROM 0x1202
48
49#define PHY_READ 0
50#define PHY_WRITE 0x20
51#define PHY_GO 0x40
52
53#define MII_TIMEOUT 10
54#define INTBUFSIZE 8
55
56#define RTL8150_REQT_READ 0xc0
57#define RTL8150_REQT_WRITE 0x40
58#define RTL8150_REQ_GET_REGS 0x05
59#define RTL8150_REQ_SET_REGS 0x05
60
61
62/* Transmit status register errors */
63#define TSR_ECOL (1<<5)
64#define TSR_LCOL (1<<4)
65#define TSR_LOSS_CRS (1<<3)
66#define TSR_JBR (1<<2)
67#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
68/* Receive status register errors */
69#define RSR_CRC (1<<2)
70#define RSR_FAE (1<<1)
71#define RSR_ERRORS (RSR_CRC | RSR_FAE)
72
73/* Media status register definitions */
74#define MSR_DUPLEX (1<<4)
75#define MSR_SPEED (1<<3)
76#define MSR_LINK (1<<2)
77
78/* Interrupt pipe data */
79#define INT_TSR 0x00
80#define INT_RSR 0x01
81#define INT_MSR 0x02
82#define INT_WAKSR 0x03
83#define INT_TXOK_CNT 0x04
84#define INT_RXLOST_CNT 0x05
85#define INT_CRERR_CNT 0x06
86#define INT_COL_CNT 0x07
87
88/* Transmit status register errors */
89#define TSR_ECOL (1<<5)
90#define TSR_LCOL (1<<4)
91#define TSR_LOSS_CRS (1<<3)
92#define TSR_JBR (1<<2)
93#define TSR_ERRORS (TSR_ECOL | TSR_LCOL | TSR_LOSS_CRS | TSR_JBR)
94/* Receive status register errors */
95#define RSR_CRC (1<<2)
96#define RSR_FAE (1<<1)
97#define RSR_ERRORS (RSR_CRC | RSR_FAE)
98
99/* Media status register definitions */
100#define MSR_DUPLEX (1<<4)
101#define MSR_SPEED (1<<3)
102#define MSR_LINK (1<<2)
103
104/* Interrupt pipe data */
105#define INT_TSR 0x00
106#define INT_RSR 0x01
107#define INT_MSR 0x02
108#define INT_WAKSR 0x03
109#define INT_TXOK_CNT 0x04
110#define INT_RXLOST_CNT 0x05
111#define INT_CRERR_CNT 0x06
112#define INT_COL_CNT 0x07
113
114
115#define RTL8150_MTU 1540
116#define RTL8150_TX_TIMEOUT (HZ)
117#define RX_SKB_POOL_SIZE 4
118
119/* rtl8150 flags */
120#define RTL8150_HW_CRC 0
121#define RX_REG_SET 1
122#define RTL8150_UNPLUG 2
123#define RX_URB_FAIL 3
124
125/* Define these values to match your device */
5859271e 126#define VENDOR_ID_REALTEK 0x0bda
1da177e4 127#define VENDOR_ID_MELCO 0x0411
5859271e 128#define VENDOR_ID_MICRONET 0x3980
1da177e4 129#define VENDOR_ID_LONGSHINE 0x07b8
5859271e 130#define VENDOR_ID_OQO 0x1557
b6c2799d 131#define VENDOR_ID_ZYXEL 0x0586
1da177e4
LT		 132
133#define PRODUCT_ID_RTL8150 0x8150
134#define PRODUCT_ID_LUAKTX 0x0012
135#define PRODUCT_ID_LCS8138TX 0x401a
136#define PRODUCT_ID_SP128AR 0x0003
b6c2799d 137#define PRODUCT_ID_PRESTIGE 0x401a
1da177e4
LT		 138
139#undef EEPROM_WRITE
140
141/* table of devices that work with this driver */
142static struct usb_device_id rtl8150_table[] = {
143 {USB_DEVICE(VENDOR_ID_REALTEK, PRODUCT_ID_RTL8150)},
144 {USB_DEVICE(VENDOR_ID_MELCO, PRODUCT_ID_LUAKTX)},
145 {USB_DEVICE(VENDOR_ID_MICRONET, PRODUCT_ID_SP128AR)},
146 {USB_DEVICE(VENDOR_ID_LONGSHINE, PRODUCT_ID_LCS8138TX)},
5859271e 147 {USB_DEVICE(VENDOR_ID_OQO, PRODUCT_ID_RTL8150)},
b6c2799d 148 {USB_DEVICE(VENDOR_ID_ZYXEL, PRODUCT_ID_PRESTIGE)},
1da177e4
LT		 149 {}
150};
151
152MODULE_DEVICE_TABLE(usb, rtl8150_table);
153
154struct rtl8150 {
155 unsigned long flags;
156 struct usb_device *udev;
157 struct tasklet_struct tl;
1da177e4
LT		 158 struct net_device *netdev;
159 struct urb *rx_urb, *tx_urb, *intr_urb, *ctrl_urb;
160 struct sk_buff *tx_skb, *rx_skb;
161 struct sk_buff *rx_skb_pool[RX_SKB_POOL_SIZE];
162 spinlock_t rx_pool_lock;
163 struct usb_ctrlrequest dr;
164 int intr_interval;
165 __le16 rx_creg;
166 u8 *intr_buff;
167 u8 phy;
168};
169
170typedef struct rtl8150 rtl8150_t;
171
1da177e4
LT		 172static void fill_skb_pool(rtl8150_t *);
173static void free_skb_pool(rtl8150_t *);
174static inline struct sk_buff *pull_skb(rtl8150_t *);
175static void rtl8150_disconnect(struct usb_interface *intf);
176static int rtl8150_probe(struct usb_interface *intf,
177 const struct usb_device_id *id);
23219c13
PC		 178static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message);
179static int rtl8150_resume(struct usb_interface *intf);
1da177e4
LT		 180
181static const char driver_name [] = "rtl8150";
182
183static struct usb_driver rtl8150_driver = {
1da177e4
LT		 184 .name = driver_name,
185 .probe = rtl8150_probe,
186 .disconnect = rtl8150_disconnect,
187 .id_table = rtl8150_table,
23219c13
PC		 188 .suspend = rtl8150_suspend,
189 .resume = rtl8150_resume
1da177e4
LT		 190};
191
192/*
193**
194** device related part of the code
195**
196*/
197static int get_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
198{
199 return usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
200 RTL8150_REQ_GET_REGS, RTL8150_REQT_READ,
201 indx, 0, data, size, 500);
202}
203
204static int set_registers(rtl8150_t * dev, u16 indx, u16 size, void *data)
205{
206 return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
207 RTL8150_REQ_SET_REGS, RTL8150_REQT_WRITE,
208 indx, 0, data, size, 500);
209}
210
7d12e780 211static void ctrl_callback(struct urb *urb)
1da177e4
LT		 212{
213 rtl8150_t *dev;
c94cb314 214 int status = urb->status;
1da177e4 215
c94cb314 216 switch (status) {
1da177e4
LT		 217 case 0:
218 break;
219 case -EINPROGRESS:
220 break;
221 case -ENOENT:
222 break;
223 default:
c94cb314 224 dev_warn(&urb->dev->dev, "ctrl urb status %d\n", status);
1da177e4
LT		 225 }
226 dev = urb->context;
227 clear_bit(RX_REG_SET, &dev->flags);
228}
229
230static int async_set_registers(rtl8150_t * dev, u16 indx, u16 size)
231{
232 int ret;
233
234 if (test_bit(RX_REG_SET, &dev->flags))
235 return -EAGAIN;
236
237 dev->dr.bRequestType = RTL8150_REQT_WRITE;
238 dev->dr.bRequest = RTL8150_REQ_SET_REGS;
239 dev->dr.wValue = cpu_to_le16(indx);
240 dev->dr.wIndex = 0;
241 dev->dr.wLength = cpu_to_le16(size);
242 dev->ctrl_urb->transfer_buffer_length = size;
243 usb_fill_control_urb(dev->ctrl_urb, dev->udev,
244 usb_sndctrlpipe(dev->udev, 0), (char *) &dev->dr,
245 &dev->rx_creg, size, ctrl_callback, dev);
23219c13
PC		 246 if ((ret = usb_submit_urb(dev->ctrl_urb, GFP_ATOMIC))) {
247 if (ret == -ENODEV)
248 netif_device_detach(dev->netdev);
1da177e4 249 err("control request submission failed: %d", ret);
23219c13 250 } else
1da177e4
LT		 251 set_bit(RX_REG_SET, &dev->flags);
252
253 return ret;
254}
255
256static int read_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 * reg)
257{
258 int i;
259 u8 data[3], tmp;
260
261 data[0] = phy;
262 data[1] = data[2] = 0;
263 tmp = indx | PHY_READ | PHY_GO;
264 i = 0;
265
266 set_registers(dev, PHYADD, sizeof(data), data);
267 set_registers(dev, PHYCNT, 1, &tmp);
268 do {
269 get_registers(dev, PHYCNT, 1, data);
270 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
271
272 if (i < MII_TIMEOUT) {
273 get_registers(dev, PHYDAT, 2, data);
274 *reg = data[0] | (data[1] << 8);
275 return 0;
276 } else
277 return 1;
278}
279
280static int write_mii_word(rtl8150_t * dev, u8 phy, __u8 indx, u16 reg)
281{
282 int i;
283 u8 data[3], tmp;
284
285 data[0] = phy;
886ae1fa
AV		 286 data[1] = reg & 0xff;
287 data[2] = (reg >> 8) & 0xff;
1da177e4
LT		 288 tmp = indx | PHY_WRITE | PHY_GO;
289 i = 0;
290
291 set_registers(dev, PHYADD, sizeof(data), data);
292 set_registers(dev, PHYCNT, 1, &tmp);
293 do {
294 get_registers(dev, PHYCNT, 1, data);
295 } while ((data[0] & PHY_GO) && (i++ < MII_TIMEOUT));
296
297 if (i < MII_TIMEOUT)
298 return 0;
299 else
300 return 1;
301}
302
303static inline void set_ethernet_addr(rtl8150_t * dev)
304{
305 u8 node_id[6];
306
307 get_registers(dev, IDR, sizeof(node_id), node_id);
308 memcpy(dev->netdev->dev_addr, node_id, sizeof(node_id));
309}
310
311static int rtl8150_set_mac_address(struct net_device *netdev, void *p)
312{
313 struct sockaddr *addr = p;
314 rtl8150_t *dev = netdev_priv(netdev);
315 int i;
316
317 if (netif_running(netdev))
318 return -EBUSY;
319
320 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
321 dbg("%s: Setting MAC address to ", netdev->name);
322 for (i = 0; i < 5; i++)
323 dbg("%02X:", netdev->dev_addr[i]);
324 dbg("%02X\n", netdev->dev_addr[i]);
325 /* Set the IDR registers. */
326 set_registers(dev, IDR, sizeof(netdev->dev_addr), netdev->dev_addr);
327#ifdef EEPROM_WRITE
328 {
329 u8 cr;
330 /* Get the CR contents. */
331 get_registers(dev, CR, 1, &cr);
332 /* Set the WEPROM bit (eeprom write enable). */
333 cr |= 0x20;
334 set_registers(dev, CR, 1, &cr);
335 /* Write the MAC address into eeprom. Eeprom writes must be word-sized,
336 so we need to split them up. */
337 for (i = 0; i * 2 < netdev->addr_len; i++) {
338 set_registers(dev, IDR_EEPROM + (i * 2), 2,
339 netdev->dev_addr + (i * 2));
340 }
341 /* Clear the WEPROM bit (preventing accidental eeprom writes). */
342 cr &= 0xdf;
343 set_registers(dev, CR, 1, &cr);
344 }
345#endif
346 return 0;
347}
348
349static int rtl8150_reset(rtl8150_t * dev)
350{
351 u8 data = 0x10;
352 int i = HZ;
353
354 set_registers(dev, CR, 1, &data);
355 do {
356 get_registers(dev, CR, 1, &data);
357 } while ((data & 0x10) && --i);
358
359 return (i > 0) ? 1 : 0;
360}
361
362static int alloc_all_urbs(rtl8150_t * dev)
363{
364 dev->rx_urb = usb_alloc_urb(0, GFP_KERNEL);
365 if (!dev->rx_urb)
366 return 0;
367 dev->tx_urb = usb_alloc_urb(0, GFP_KERNEL);
368 if (!dev->tx_urb) {
369 usb_free_urb(dev->rx_urb);
370 return 0;
371 }
372 dev->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
373 if (!dev->intr_urb) {
374 usb_free_urb(dev->rx_urb);
375 usb_free_urb(dev->tx_urb);
376 return 0;
377 }
378 dev->ctrl_urb = usb_alloc_urb(0, GFP_KERNEL);
7fdba2f2 379 if (!dev->ctrl_urb) {
1da177e4
LT		 380 usb_free_urb(dev->rx_urb);
381 usb_free_urb(dev->tx_urb);
382 usb_free_urb(dev->intr_urb);
383 return 0;
384 }
385
386 return 1;
387}
388
389static void free_all_urbs(rtl8150_t * dev)
390{
391 usb_free_urb(dev->rx_urb);
392 usb_free_urb(dev->tx_urb);
393 usb_free_urb(dev->intr_urb);
394 usb_free_urb(dev->ctrl_urb);
395}
396
397static void unlink_all_urbs(rtl8150_t * dev)
398{
399 usb_kill_urb(dev->rx_urb);
400 usb_kill_urb(dev->tx_urb);
401 usb_kill_urb(dev->intr_urb);
402 usb_kill_urb(dev->ctrl_urb);
403}
404
405static inline struct sk_buff *pull_skb(rtl8150_t *dev)
406{
407 struct sk_buff *skb;
408 int i;
409
410 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
411 if (dev->rx_skb_pool[i]) {
412 skb = dev->rx_skb_pool[i];
413 dev->rx_skb_pool[i] = NULL;
414 return skb;
415 }
416 }
417 return NULL;
418}
419
7d12e780 420static void read_bulk_callback(struct urb *urb)
1da177e4
LT		 421{
422 rtl8150_t *dev;
423 unsigned pkt_len, res;
424 struct sk_buff *skb;
425 struct net_device *netdev;
426 u16 rx_stat;
c94cb314
ON		 427 int status = urb->status;
428 int result;
1da177e4
LT		 429
430 dev = urb->context;
431 if (!dev)
432 return;
433 if (test_bit(RTL8150_UNPLUG, &dev->flags))
434 return;
435 netdev = dev->netdev;
436 if (!netif_device_present(netdev))
437 return;
438
c94cb314 439 switch (status) {
1da177e4
LT		 440 case 0:
441 break;
442 case -ENOENT:
443 return; /* the urb is in unlink state */
38e2bfc9 444 case -ETIME:
4dc89948 445 dev_warn(&urb->dev->dev, "may be reset is needed?..\n");
1da177e4
LT		 446 goto goon;
447 default:
c94cb314 448 dev_warn(&urb->dev->dev, "Rx status %d\n", status);
1da177e4
LT		 449 goto goon;
450 }
451
452 if (!dev->rx_skb)
453 goto resched;
454 /* protect against short packets (tell me why we got some?!?) */
455 if (urb->actual_length < 4)
456 goto goon;
457
458 res = urb->actual_length;
459 rx_stat = le16_to_cpu(*(__le16 *)(urb->transfer_buffer + res - 4));
460 pkt_len = res - 4;
461
462 skb_put(dev->rx_skb, pkt_len);
463 dev->rx_skb->protocol = eth_type_trans(dev->rx_skb, netdev);
464 netif_rx(dev->rx_skb);
b7e41e23
SH		 465 netdev->stats.rx_packets++;
466 netdev->stats.rx_bytes += pkt_len;
1da177e4
LT		 467
468 spin_lock(&dev->rx_pool_lock);
469 skb = pull_skb(dev);
470 spin_unlock(&dev->rx_pool_lock);
471 if (!skb)
472 goto resched;
473
474 dev->rx_skb = skb;
475goon:
476 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
477 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
c94cb314
ON		 478 result = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
479 if (result == -ENODEV)
23219c13 480 netif_device_detach(dev->netdev);
c94cb314 481 else if (result) {
1da177e4
LT		 482 set_bit(RX_URB_FAIL, &dev->flags);
483 goto resched;
484 } else {
485 clear_bit(RX_URB_FAIL, &dev->flags);
486 }
487
488 return;
489resched:
490 tasklet_schedule(&dev->tl);
491}
492
493static void rx_fixup(unsigned long data)
494{
495 rtl8150_t *dev;
496 struct sk_buff *skb;
23219c13 497 int status;
1da177e4
LT		 498
499 dev = (rtl8150_t *)data;
500
501 spin_lock_irq(&dev->rx_pool_lock);
502 fill_skb_pool(dev);
503 spin_unlock_irq(&dev->rx_pool_lock);
504 if (test_bit(RX_URB_FAIL, &dev->flags))
505 if (dev->rx_skb)
506 goto try_again;
507 spin_lock_irq(&dev->rx_pool_lock);
508 skb = pull_skb(dev);
509 spin_unlock_irq(&dev->rx_pool_lock);
510 if (skb == NULL)
511 goto tlsched;
512 dev->rx_skb = skb;
513 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
514 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
515try_again:
23219c13
PC		 516 status = usb_submit_urb(dev->rx_urb, GFP_ATOMIC);
517 if (status == -ENODEV) {
518 netif_device_detach(dev->netdev);
519 } else if (status) {
1da177e4
LT		 520 set_bit(RX_URB_FAIL, &dev->flags);
521 goto tlsched;
23219c13 522 } else {
1da177e4
LT		 523 clear_bit(RX_URB_FAIL, &dev->flags);
524 }
525
526 return;
527tlsched:
528 tasklet_schedule(&dev->tl);
529}
530
7d12e780 531static void write_bulk_callback(struct urb *urb)
1da177e4
LT		 532{
533 rtl8150_t *dev;
c94cb314 534 int status = urb->status;
1da177e4
LT		 535
536 dev = urb->context;
537 if (!dev)
538 return;
539 dev_kfree_skb_irq(dev->tx_skb);
540 if (!netif_device_present(dev->netdev))
541 return;
c94cb314 542 if (status)
880c9c66 543 dev_info(&urb->dev->dev, "%s: Tx status %d\n",
c94cb314 544 dev->netdev->name, status);
1da177e4
LT		 545 dev->netdev->trans_start = jiffies;
546 netif_wake_queue(dev->netdev);
547}
548
7d12e780 549static void intr_callback(struct urb *urb)
1da177e4
LT		 550{
551 rtl8150_t *dev;
552 __u8 *d;
c94cb314
ON		 553 int status = urb->status;
554 int res;
1da177e4
LT		 555
556 dev = urb->context;
557 if (!dev)
558 return;
c94cb314 559 switch (status) {
1da177e4
LT		 560 case 0: /* success */
561 break;
562 case -ECONNRESET: /* unlink */
563 case -ENOENT:
564 case -ESHUTDOWN:
565 return;
566 /* -EPIPE: should clear the halt */
567 default:
880c9c66 568 dev_info(&urb->dev->dev, "%s: intr status %d\n",
c94cb314 569 dev->netdev->name, status);
1da177e4
LT		 570 goto resubmit;
571 }
572
573 d = urb->transfer_buffer;
574 if (d[0] & TSR_ERRORS) {
b7e41e23 575 dev->netdev->stats.tx_errors++;
1da177e4 576 if (d[INT_TSR] & (TSR_ECOL | TSR_JBR))
b7e41e23 577 dev->netdev->stats.tx_aborted_errors++;
1da177e4 578 if (d[INT_TSR] & TSR_LCOL)
b7e41e23 579 dev->netdev->stats.tx_window_errors++;
1da177e4 580 if (d[INT_TSR] & TSR_LOSS_CRS)
b7e41e23 581 dev->netdev->stats.tx_carrier_errors++;
1da177e4
LT		 582 }
583 /* Report link status changes to the network stack */
584 if ((d[INT_MSR] & MSR_LINK) == 0) {
585 if (netif_carrier_ok(dev->netdev)) {
586 netif_carrier_off(dev->netdev);
587 dbg("%s: LINK LOST\n", __func__);
588 }
589 } else {
590 if (!netif_carrier_ok(dev->netdev)) {
591 netif_carrier_on(dev->netdev);
592 dbg("%s: LINK CAME BACK\n", __func__);
593 }
594 }
595
596resubmit:
c94cb314
ON		 597 res = usb_submit_urb (urb, GFP_ATOMIC);
598 if (res == -ENODEV)
23219c13 599 netif_device_detach(dev->netdev);
c94cb314 600 else if (res)
1da177e4
LT		 601 err ("can't resubmit intr, %s-%s/input0, status %d",
602 dev->udev->bus->bus_name,
c94cb314 603 dev->udev->devpath, res);
1da177e4
LT		 604}
605
23219c13
PC		 606static int rtl8150_suspend(struct usb_interface *intf, pm_message_t message)
607{
608 rtl8150_t *dev = usb_get_intfdata(intf);
609
610 netif_device_detach(dev->netdev);
611
612 if (netif_running(dev->netdev)) {
613 usb_kill_urb(dev->rx_urb);
614 usb_kill_urb(dev->intr_urb);
615 }
616 return 0;
617}
618
619static int rtl8150_resume(struct usb_interface *intf)
620{
621 rtl8150_t *dev = usb_get_intfdata(intf);
622
623 netif_device_attach(dev->netdev);
624 if (netif_running(dev->netdev)) {
625 dev->rx_urb->status = 0;
626 dev->rx_urb->actual_length = 0;
7d12e780 627 read_bulk_callback(dev->rx_urb);
23219c13
PC		 628
629 dev->intr_urb->status = 0;
630 dev->intr_urb->actual_length = 0;
7d12e780 631 intr_callback(dev->intr_urb);
23219c13
PC		 632 }
633 return 0;
634}
1da177e4
LT		 635
636/*
637**
638** network related part of the code
639**
640*/
641
642static void fill_skb_pool(rtl8150_t *dev)
643{
644 struct sk_buff *skb;
645 int i;
646
647 for (i = 0; i < RX_SKB_POOL_SIZE; i++) {
648 if (dev->rx_skb_pool[i])
649 continue;
650 skb = dev_alloc_skb(RTL8150_MTU + 2);
651 if (!skb) {
652 return;
653 }
1da177e4
LT		 654 skb_reserve(skb, 2);
655 dev->rx_skb_pool[i] = skb;
656 }
657}
658
659static void free_skb_pool(rtl8150_t *dev)
660{
661 int i;
662
663 for (i = 0; i < RX_SKB_POOL_SIZE; i++)
664 if (dev->rx_skb_pool[i])
665 dev_kfree_skb(dev->rx_skb_pool[i]);
666}
667
668static int enable_net_traffic(rtl8150_t * dev)
669{
670 u8 cr, tcr, rcr, msr;
671
672 if (!rtl8150_reset(dev)) {
4dc89948 673 dev_warn(&dev->udev->dev, "device reset failed\n");
1da177e4
LT		 674 }
675 /* RCR bit7=1 attach Rx info at the end; =0 HW CRC (which is broken) */
676 rcr = 0x9e;
677 dev->rx_creg = cpu_to_le16(rcr);
678 tcr = 0xd8;
679 cr = 0x0c;
680 if (!(rcr & 0x80))
681 set_bit(RTL8150_HW_CRC, &dev->flags);
682 set_registers(dev, RCR, 1, &rcr);
683 set_registers(dev, TCR, 1, &tcr);
684 set_registers(dev, CR, 1, &cr);
685 get_registers(dev, MSR, 1, &msr);
686
687 return 0;
688}
689
690static void disable_net_traffic(rtl8150_t * dev)
691{
692 u8 cr;
693
694 get_registers(dev, CR, 1, &cr);
695 cr &= 0xf3;
696 set_registers(dev, CR, 1, &cr);
697}
698
1da177e4
LT		 699static void rtl8150_tx_timeout(struct net_device *netdev)
700{
701 rtl8150_t *dev = netdev_priv(netdev);
4dc89948 702 dev_warn(&netdev->dev, "Tx timeout.\n");
1da177e4 703 usb_unlink_urb(dev->tx_urb);
b7e41e23 704 netdev->stats.tx_errors++;
1da177e4
LT		 705}
706
707static void rtl8150_set_multicast(struct net_device *netdev)
708{
709 rtl8150_t *dev = netdev_priv(netdev);
710 netif_stop_queue(netdev);
711 if (netdev->flags & IFF_PROMISC) {
712 dev->rx_creg |= cpu_to_le16(0x0001);
880c9c66 713 dev_info(&netdev->dev, "%s: promiscuous mode\n", netdev->name);
ae0a97bf 714 } else if (netdev->mc_count ||
1da177e4
LT		 715 (netdev->flags & IFF_ALLMULTI)) {
716 dev->rx_creg &= cpu_to_le16(0xfffe);
717 dev->rx_creg |= cpu_to_le16(0x0002);
880c9c66 718 dev_info(&netdev->dev, "%s: allmulti set\n", netdev->name);
1da177e4
LT		 719 } else {
720 /* ~RX_MULTICAST, ~RX_PROMISCUOUS */
721 dev->rx_creg &= cpu_to_le16(0x00fc);
722 }
723 async_set_registers(dev, RCR, 2);
724 netif_wake_queue(netdev);
725}
726
727static int rtl8150_start_xmit(struct sk_buff *skb, struct net_device *netdev)
728{
729 rtl8150_t *dev = netdev_priv(netdev);
730 int count, res;
731
732 netif_stop_queue(netdev);
733 count = (skb->len < 60) ? 60 : skb->len;
734 count = (count & 0x3f) ? count : count + 1;
735 dev->tx_skb = skb;
736 usb_fill_bulk_urb(dev->tx_urb, dev->udev, usb_sndbulkpipe(dev->udev, 2),
737 skb->data, count, write_bulk_callback, dev);
738 if ((res = usb_submit_urb(dev->tx_urb, GFP_ATOMIC))) {
23219c13
PC		 739 /* Can we get/handle EPIPE here? */
740 if (res == -ENODEV)
741 netif_device_detach(dev->netdev);
742 else {
4dc89948 743 dev_warn(&netdev->dev, "failed tx_urb %d\n", res);
b7e41e23 744 netdev->stats.tx_errors++;
23219c13
PC		 745 netif_start_queue(netdev);
746 }
1da177e4 747 } else {
b7e41e23
SH		 748 netdev->stats.tx_packets++;
749 netdev->stats.tx_bytes += skb->len;
1da177e4
LT		 750 netdev->trans_start = jiffies;
751 }
752
753 return 0;
754}
755
756
757static void set_carrier(struct net_device *netdev)
758{
759 rtl8150_t *dev = netdev_priv(netdev);
760 short tmp;
761
762 get_registers(dev, CSCR, 2, &tmp);
763 if (tmp & CSCR_LINK_STATUS)
764 netif_carrier_on(netdev);
765 else
766 netif_carrier_off(netdev);
767}
768
769static int rtl8150_open(struct net_device *netdev)
770{
771 rtl8150_t *dev = netdev_priv(netdev);
772 int res;
773
774 if (dev->rx_skb == NULL)
775 dev->rx_skb = pull_skb(dev);
776 if (!dev->rx_skb)
777 return -ENOMEM;
778
779 set_registers(dev, IDR, 6, netdev->dev_addr);
780
781 usb_fill_bulk_urb(dev->rx_urb, dev->udev, usb_rcvbulkpipe(dev->udev, 1),
782 dev->rx_skb->data, RTL8150_MTU, read_bulk_callback, dev);
23219c13
PC		 783 if ((res = usb_submit_urb(dev->rx_urb, GFP_KERNEL))) {
784 if (res == -ENODEV)
785 netif_device_detach(dev->netdev);
4dc89948 786 dev_warn(&netdev->dev, "rx_urb submit failed: %d\n", res);
23219c13
PC		 787 return res;
788 }
1da177e4
LT		 789 usb_fill_int_urb(dev->intr_urb, dev->udev, usb_rcvintpipe(dev->udev, 3),
790 dev->intr_buff, INTBUFSIZE, intr_callback,
791 dev, dev->intr_interval);
23219c13
PC		 792 if ((res = usb_submit_urb(dev->intr_urb, GFP_KERNEL))) {
793 if (res == -ENODEV)
794 netif_device_detach(dev->netdev);
4dc89948 795 dev_warn(&netdev->dev, "intr_urb submit failed: %d\n", res);
23219c13
PC		 796 usb_kill_urb(dev->rx_urb);
797 return res;
798 }
1da177e4
LT		 799 enable_net_traffic(dev);
800 set_carrier(netdev);
23219c13 801 netif_start_queue(netdev);
1da177e4
LT		 802
803 return res;
804}
805
806static int rtl8150_close(struct net_device *netdev)
807{
808 rtl8150_t *dev = netdev_priv(netdev);
809 int res = 0;
810
811 netif_stop_queue(netdev);
812 if (!test_bit(RTL8150_UNPLUG, &dev->flags))
813 disable_net_traffic(dev);
814 unlink_all_urbs(dev);
815
816 return res;
817}
818
819static void rtl8150_get_drvinfo(struct net_device *netdev, struct ethtool_drvinfo *info)
820{
821 rtl8150_t *dev = netdev_priv(netdev);
822
823 strncpy(info->driver, driver_name, ETHTOOL_BUSINFO_LEN);
824 strncpy(info->version, DRIVER_VERSION, ETHTOOL_BUSINFO_LEN);
825 usb_make_path(dev->udev, info->bus_info, sizeof info->bus_info);
826}
827
828static int rtl8150_get_settings(struct net_device *netdev, struct ethtool_cmd *ecmd)
829{
830 rtl8150_t *dev = netdev_priv(netdev);
831 short lpa, bmcr;
832
833 ecmd->supported = (SUPPORTED_10baseT_Half |
834 SUPPORTED_10baseT_Full |
835 SUPPORTED_100baseT_Half |
836 SUPPORTED_100baseT_Full |
837 SUPPORTED_Autoneg |
838 SUPPORTED_TP | SUPPORTED_MII);
839 ecmd->port = PORT_TP;
840 ecmd->transceiver = XCVR_INTERNAL;
841 ecmd->phy_address = dev->phy;
842 get_registers(dev, BMCR, 2, &bmcr);
843 get_registers(dev, ANLP, 2, &lpa);
844 if (bmcr & BMCR_ANENABLE) {
845 ecmd->autoneg = AUTONEG_ENABLE;
846 ecmd->speed = (lpa & (LPA_100HALF | LPA_100FULL)) ?
847 SPEED_100 : SPEED_10;
848 if (ecmd->speed == SPEED_100)
849 ecmd->duplex = (lpa & LPA_100FULL) ?
850 DUPLEX_FULL : DUPLEX_HALF;
851 else
852 ecmd->duplex = (lpa & LPA_10FULL) ?
853 DUPLEX_FULL : DUPLEX_HALF;
854 } else {
855 ecmd->autoneg = AUTONEG_DISABLE;
856 ecmd->speed = (bmcr & BMCR_SPEED100) ?
857 SPEED_100 : SPEED_10;
858 ecmd->duplex = (bmcr & BMCR_FULLDPLX) ?
859 DUPLEX_FULL : DUPLEX_HALF;
860 }
861 return 0;
862}
863
864static struct ethtool_ops ops = {
865 .get_drvinfo = rtl8150_get_drvinfo,
866 .get_settings = rtl8150_get_settings,
867 .get_link = ethtool_op_get_link
868};
869
870static int rtl8150_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
871{
872 rtl8150_t *dev = netdev_priv(netdev);
873 u16 *data = (u16 *) & rq->ifr_ifru;
874 int res = 0;
875
876 switch (cmd) {
877 case SIOCDEVPRIVATE:
878 data[0] = dev->phy;
879 case SIOCDEVPRIVATE + 1:
880 read_mii_word(dev, dev->phy, (data[1] & 0x1f), &data[3]);
881 break;
882 case SIOCDEVPRIVATE + 2:
883 if (!capable(CAP_NET_ADMIN))
884 return -EPERM;
885 write_mii_word(dev, dev->phy, (data[1] & 0x1f), data[2]);
886 break;
887 default:
888 res = -EOPNOTSUPP;
889 }
890
891 return res;
892}
893
894static int rtl8150_probe(struct usb_interface *intf,
895 const struct usb_device_id *id)
896{
897 struct usb_device *udev = interface_to_usbdev(intf);
898 rtl8150_t *dev;
899 struct net_device *netdev;
900
901 netdev = alloc_etherdev(sizeof(rtl8150_t));
902 if (!netdev) {
903 err("Out of memory");
904 return -ENOMEM;
905 }
906
907 dev = netdev_priv(netdev);
1da177e4
LT		 908
909 dev->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
910 if (!dev->intr_buff) {
911 free_netdev(netdev);
912 return -ENOMEM;
913 }
914
915 tasklet_init(&dev->tl, rx_fixup, (unsigned long)dev);
916 spin_lock_init(&dev->rx_pool_lock);
917
918 dev->udev = udev;
919 dev->netdev = netdev;
1da177e4
LT		 920 netdev->open = rtl8150_open;
921 netdev->stop = rtl8150_close;
922 netdev->do_ioctl = rtl8150_ioctl;
923 netdev->watchdog_timeo = RTL8150_TX_TIMEOUT;
924 netdev->tx_timeout = rtl8150_tx_timeout;
925 netdev->hard_start_xmit = rtl8150_start_xmit;
926 netdev->set_multicast_list = rtl8150_set_multicast;
927 netdev->set_mac_address = rtl8150_set_mac_address;
b7e41e23 928
1da177e4
LT		 929 SET_ETHTOOL_OPS(netdev, &ops);
930 dev->intr_interval = 100; /* 100ms */
931
932 if (!alloc_all_urbs(dev)) {
933 err("out of memory");
934 goto out;
935 }
936 if (!rtl8150_reset(dev)) {
937 err("couldn't reset the device");
938 goto out1;
939 }
940 fill_skb_pool(dev);
941 set_ethernet_addr(dev);
1da177e4
LT		 942
943 usb_set_intfdata(intf, dev);
944 SET_NETDEV_DEV(netdev, &intf->dev);
945 if (register_netdev(netdev) != 0) {
946 err("couldn't register the device");
947 goto out2;
948 }
09abfa80 949
880c9c66 950 dev_info(&intf->dev, "%s: rtl8150 is detected\n", netdev->name);
09abfa80 951
1da177e4
LT		 952 return 0;
953
954out2:
955 usb_set_intfdata(intf, NULL);
956 free_skb_pool(dev);
957out1:
958 free_all_urbs(dev);
959out:
960 kfree(dev->intr_buff);
961 free_netdev(netdev);
962 return -EIO;
963}
964
965static void rtl8150_disconnect(struct usb_interface *intf)
966{
967 rtl8150_t *dev = usb_get_intfdata(intf);
968
969 usb_set_intfdata(intf, NULL);
970 if (dev) {
971 set_bit(RTL8150_UNPLUG, &dev->flags);
8da608ca 972 tasklet_disable(&dev->tl);
eff674a5 973 tasklet_kill(&dev->tl);
1da177e4
LT		 974 unregister_netdev(dev->netdev);
975 unlink_all_urbs(dev);
976 free_all_urbs(dev);
977 free_skb_pool(dev);
978 if (dev->rx_skb)
979 dev_kfree_skb(dev->rx_skb);
980 kfree(dev->intr_buff);
981 free_netdev(dev->netdev);
982 }
983}
984
985static int __init usb_rtl8150_init(void)
986{
880c9c66
GKH		 987 printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
988 DRIVER_DESC "\n");
1da177e4
LT		 989 return usb_register(&rtl8150_driver);
990}
991
992static void __exit usb_rtl8150_exit(void)
993{
994 usb_deregister(&rtl8150_driver);
995}
996
997module_init(usb_rtl8150_init);
998module_exit(usb_rtl8150_exit);
999
1000MODULE_AUTHOR(DRIVER_AUTHOR);
1001MODULE_DESCRIPTION(DRIVER_DESC);
1002MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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